PRK (Photorefractive keratectomy) happens to be a sort of laser eye surgery. It happens to be used to progress vision by modifying refractive faults in the eye.
Myopia, hyperopia, and astigmatism use to be all instances of refractive faults. Based on your requirements, you might have PRK surgery in your single eye or in both eyes.
PRK preludes LASIK surgery and use to be a comparable procedure. LASIK and PRK work by redesigning the cornea, which use to be the clear front portion of the eye. This improves the eye’s ability to focus. With PRK, the surgeon happens to remove and discard the external epithelial layer of the cornea, which use to leave the eye unprotected, before reforming the cornea. This layer use to regenerate on its own and grows over time.
The success rates are similar for the two procedures.
- Can be done on people with thin corneas or thinner corneal tissue due to poor vision or severe myopia.
- Less hazard of removing excessive of the cornea
- Cheaper than LASIK
- Less risk of difficulties from the flap
- Dry eye is less likely to result from PRK surgery
How does the PKR take place?
PKR is a painless operation using anesthetic eye drops. It is performed in an operating theater, externally, without hospitalization. Some operate both eyes in the same session.
The kraff eye surgeon places an eyelid retractor to prevent the eye from closing. It removes the very thin superficial layer of the cornea called the epithelium, most often by simply scraping with a hand instrument. The excimer laser then sculpts the corneal tissue according to the data programmed during the preoperative assessment. Often a dressing lens (therapeutic) is placed for a period of 4 days to reduce postoperative pain of Cataract Surgery and accelerate healing.
The postoperative consequences of the first 48 hours are most often painful despite the therapeutic lens and require the repeated intake of analgesics. Antibiotic eye drops are prescribed for a week.
Visual recovery is most often only obtained after the 3rd postoperative day and stability is only final after the 3rd month.